I 025.4 Dew D6 Dewey, Melvil, 1851-1981 Decimal classification, devised by Melvil Dewey; standard. 15th. ed. Lake Placid, N. Y., Forest Press [1951] iv, 661 p. 27 cm. ´´Foreword to standard edition´´ firmada: Milton James Ferguson. --- --- Relative index volume. Revised [1952] 872 p. 27 cm.